baber/WOPTO huggingface dataset:
Patent GB-142767-A (GB)
Title: Improvements relating to roller boxes for containing textile fabrics and the like
IPC: B65H75/16
Filed: 1920-01-24
Abstract: 142,767. Burgon, A. Jan. 24, 1920. Roll-holders, winding-devices for.-In a box containing a length of fabric wound on a roller provided with a readily attachable and detachable handle, a bearing independent of that for supporting the roller is provided in the box and for the handle head. As shown, the box has inner and outer end parts d, e, Fig. 6, and a plate c secured to the part d and slotted from the top to provide a bearing for the pivot spindle b<3> of the roller a, the part d also being slotted from the top. A bearing hole e<1> is provided in the part e for the head h of the handle h<2>, which, as shown, has a square hole h<1> to engage a square head b<4> on the spindle b<3>. The head b<4> may be of other shape, or may be provided with a square hole to be engaged by a corresponding projection on the handle head, or a circular disk at the end of the spindle may have slots in its periphery to be engaged by projections on the handle head. In another form, the roller a<1>, Fig. 8, has a metal cap s and washer t and is supported directly in a hole formed in the inner end part u of the box, the outer part v having a circular hole v<1> to form a bearing for a handle head w which has a square projection w<1> engaging a similar hole in the cap s and washer t.
Patent GB-1490682-A (GB)
Title: Fluid reversing valve
IPC: F15D1/02
Filed: 1976-01-21
Abstract: 1490682 Valves; fluid-propelled pipe-cleaning brushes WATER SERVICES OF AMERICA Inc 21 Jan 1976 [27 Jan 1975] 02337/76 Headings F2V and F2N A valve has a housing 10, Figs. 3 and 4, provided with ports 55, 56, 57, 58 and a valve member 46 located in the housing at one side of an apertured transverse partition 24. The valve member is rotatable into alternative positions to reverse the direction of flow through an external process loop, e.g. containing a heat exchanger. Thus with the valve member positioned as shown in Fig. 4, fluid entering via port 55 follows the course of arrows 60 to port 58 leading to the process loop and fluid from the loop enters via port 57 and follows the course of arrows 62 to port 56. When the valve has been rotated to its other position in which it seats against elements 33, 44, the flow direction through the process loop and ports 57, 58 is reversed whilst the flow direction through the ports 55, 56 remains unchanged. The ports may be located around the periphery of the housing in aligned pairs or at least one part may be located in a side wall of the housing, Figs. 1 and 2 (not shown). In an alternative embodiment, Figs. 6 and 7 (not shown), three ports communicate directly with the space at the valve member side of the transverse partition whereas the other port communicates directly with the space at the other side. In another embodiment, Figs. 8 to 11 (not shown), the valve is directly connected with flow and return pipe groups (106, 107 and 104, 105) of a heat exchanger to reverse the direction of flow through those groups. Moreover, each pipe has at each end a cage 114, Fig. 13, for housing a brush 112 which is propelled by the fluid to the cage at the opposite end when the direction of flow through the pipe is reversed, thereby clearing the pipe walls of sediment. The brush comprises a twisted wire shaft and helically arranged bristles.
Patent GB-1369091-A (GB)
Title: Process for the cultivation of yeast on a hydrocarbon substrate
IPC: B65D85/67
Filed: 1971-01-18
Abstract: 1369091 Yeast BRITISH PETROLEUM CO Ltd 17 Dec 1971 [18 Jan 1971] 2347/71 Heading C6F The exponential growth stage of the aerobic cultivation of a hydrocarbon utilizing yeast e.g., Candida tropicalis on a hydrocarbon feedstock (gas oil) in an aqueous nutrient medium is carried out in the presence of an added aliphatic monocarboxylic acid having more than 12 carbon atoms per molecule, typically at a concentration in the range 0.1 to 10 millimoles per litre. The acid may be dissolved in the hydrocarbon feedstock and the solution of acid in the feedstock added to the aqueous nutrient medium. Examples are directed to the use of tetra-, hexa- and octadecanoic and 2-methylhexadecanoic acids. In comparative fermentations, the effect of undecanoic and dodecanoic acids is tested.
Patent GB-481273-A (GB)
Title: Improvements in or relating to the recovery of valuable metals or metal compounds from complex ores
IPC: C22B1/02
Filed: 1936-06-08
Abstract: A process for the recovery of metals or metal compounds from complex oxide ores containing oxides both of iron and of another metal such as chromium, tungsten, vanadium, molybdenum, or titanium, comprises heating the ore in comminuted form under oxidizing conditions, the degree of comminution, the temperature and the oxidizing conditions being so controlled as to cause the bond between the constituents of the ore to be destroyed, reducing the product, for example by hydrogen, so as to reduce the iron oxide but not the oxide of the other metal, and separating the iron thus reduced.  The ore is oxidized in a stream of oxygen or oxygen-containing gas.  The process may be applied to the treatment of chromite, the iron being separated magnetically from the chromium oxide product which may contain 70 per cent or more of Cr2 O3.ALSO:A process for the recovery of metals or metal compounds from complex oxide ores containing oxides both of iron and of another metal such as chromium, tungsten, vanadium, molybdenum, or titanium, comprises heating the ore in comminuted form under oxidizing conditions, the degree of comminution, the temperature and the oxidizing conditions being so controlled as to cause the bond between the constituents of the ore to be destroyed, reducing the product, for example by hydrogen, so as to reduce the iron oxide but not the oxide of the other metal, and separating the iron thus reduced.  The ore is oxidized in a stream of oxygen or oxygen-containing gas.  The process may be applied to the treatment of chromite, the iron being separated magnetically from the chromium oxide product which may contain 70 per cent or more of Cr2O3.
Patent GB-161355-A (GB)
Title: Improvements relating to padlocks
IPC: E05B67/24
Filed: 1920-01-27
Abstract: 161,355. Vaughan, A. H., and Norton, B. Jan. 27, 1920. Padlocks; locks, revolving-barrel. - The body a of a padlock, Fig. 4, is made from a cast or stamped metal block, ears c being formed for the reception of the shackle d. Holes are drilled to receive the revolving- barrel f, the pin tumblers z, the bolt k, and the spring plunger n. The bolt and bolt-recess are shouldered at i, and the surface of the barrel f holds the rounded nose in engagement with the semi-circular slot p in the shackle, for locking. When the barrel is released and rotated so that its recess o is opposite the tail end of the bolt, the spring plunger n forces out the shackle and the end of the bolt enters the barrel. Rotation of the barrel again locks the shackle, the tail end of the bolt and the recess o being rounded. In a modification, Fig. 6, the shackle r is locked by the entry of the round-ended floating bolts or balls t into recesses, where they are held by the barrel f. A shoulder z prevents escape of the bolt or ball when the shackle leg is withdrawn. The rotation of the barrel to the required position brings the paired recesses u opposite the bolts t, and the shackle r can then be pulled up until the short leg s is clear of the case, and rotated. In both forms, means may be provided for limiting the rotation of the barrel to the required positions, such as the peg x, Fig. 6, and for returning the barrel to the locking position, such as the spring l.
Patent GB-984549-A (GB)
Title: Magnetic transducer assemblies
IPC: G11B5/004
Filed: 1963-01-21
Abstract: 984, 549. Magnetic recording &c. heads; supporting. SPERRY RAND CORPORATION. Jan. 21, 1963 [Feb. 2, 1962], No. 2497/63. Heading G5R. An assembly for maintaining a magnetic recording head in close hydrodynamic bearing relationship to a record surface comprises a loading arm having one end attached to a support member and an opposite end free for movement towards or away from the record surface, a pivot bearing interposed between the recording head and the free end of the loading arm to allow tilting movement of the recording head, and a flat spring element coupling the recording head to the loading arm to restrain the recording head from movements in planes parallel to the record surface. Fig. 1 shows an exploded view of an assembly including a head unit 10 provided with a circular depression 14 in which a ball 16 is cemented. The unit 10 is provided with a rabbet 18 which receives the tab portions 20 of suspension spring 22 which is secured at one end to a loading spring 28. The spring 28 carries a button 38 forming a pivot bearing surface for the ball 16, and at its other end is embedded in an arm 34. A pair of such assemblies may be arranged between two drum recording surfaces, (Fig. 2 not shown), the arms 34 of the assemblies being movable by a pneumatic actuator from a non-recording to a recording position; the latter is adjustable by adjustable stop means attached to arms 34, and in operation recording heads are spaced from the drums by high velocity air travelling with the drum surfaces. In an alternative arrangement, (Figs. 4-6 not shown), the spring 28 is replaced by a rigid arm which carries a ball at one end, the recording head having a co-operating bearing surface. The arms of the suspension spring carrying the recording head are provided with portions of reduced crosssection to allow greater freedom of movement of the recording head.
Patent GB-684166-A (GB)
Title: Improvements in or relating to the sensitization and supersensitization of photographic emulsions
IPC: G03C1/10
Filed: 1950-01-31
Abstract: <FORM:0684166/IV (b)/1> Compounds of the general formula of Fig. 1, wherein D represents the atoms necessary to complete a 5- or 6-membered heterocyclic nucleus, which may bear a fused-on arylene ring, n is 1 or 2, R is H, alkyl, substituted alkyl, aryl, alkenyl, or alkylene, and R is acyl, substituted or not, are prepared by condensing a compound of the general formula of Fig. 3 or of Fig. 4 (wherein X is an acid residue) with an ester, anhydride, or acid chloride of an aliphatic, aromatic, or heterocyclic acid.  N : N1-Bis-3-methylbenzthiazolylidene-malonamide is prepared by heating together N-methyl-2-iminodihydrobenzthiazole and ethyl malonate. N-3-phenylbenzthiazolylidene-acetamide, N-3-methylbenzthiazolylidene - acetamide, N - 3 - methylbenzthiazolylidene - benzthiazolyl - (2) - acetamide, N - 3 - methylbenzthiazolylidene - benzamide, N - 3 - benzthiazolylidene - acetoacetamide, N - benzthiazolylidene - benzamide - (2 - benzamidobenzthiazole) N - benziminazolylidene - benzamidobenziminazole), N - pyridyl-(4)-acetamide, N : N1-bis - 3 - methylbenzthiazolylidene - hydroquinonediacetamide, N - 6 : 7 - benzbenzininazolylidene - benzamide, N - benzoxazolylidene - benzamide, and N - pyridyl - (2) - benzoylacetamide are similarly prepared.  Compounds of the general formula of Fig. 1, wherein R1 is an amido group and D, R, and n are as before, are prepared by condensing a compound of the general formula of Fig. 3 or of Fig. 4 (wherein X is an acid residue) with phosgene, urea, or a urea derivative.  N-3-Methylbenzthiazolylidene-urea is prepared by melting together N-methyl-2-iminodihydrobenzthiazole and urea.  1 : 3 - Bis - benzthiazolylidene - acetamide is prepared by adding an ethenol solution of potassium hydroxide to a solution of N-3-methylbenzthiazolylidene - 3 - methylbenzthiazolyl acetamide iodide (prepared by heating N - 3 - methylbenzthiazolylidene - benzthiazolylacetamide with methyl iodide in a sealed tube).
Patent GB-1163851-A (GB)
Title: Derivatives of 1,4-[bis-benzoxazolyl-(2')]-naphthalene and the use thereof as optical brighteners
IPC: C08K5/35
Filed: 1967-01-18
Abstract: 1,163,851. Derivatives of bis(benzoxazolyl)- naphthalene. FARBWERKE HOECHST A.G. 18 Jan., 1967 [18 Jan., 1966 (2)], No. 2606/67. Heading C2C. [Also in Divisions C3 and Dl] The invention comprises asymmetrical benzoxazole compounds of the formula wherein R 1-4  each represents hydrogen or a C 1-4  alkyl group, the substitutents in each benzoxazole moiety being different. The compounds are prepared by condensing the acid chloride of an acid of the Formula II with an o-aminophenol of the formula and heating the amide intermediate of the formula at a temperature above 200‹ C. in a high-boiling solvent under an atmosphere of an inert gas, if desired in the presence of an acidic catalyst, e.g. ZnCl 2 , p-toluene sulphonic acid. The asymmetrical benzoxazoles are used as optical brighteners. The acid reactants of the Formula II are prepared by converting the dimethyl ester of naphthalene-1,4-dicarboxylic acid to the monomethyl ester by partial hydrolysis, treating the half ester with thionyl chloride to form the acid chloride, condensing the acid chloride with an o-aminophenol to give an intermediate amide which is cyclized by heating to the appropriate 4-[benzoxazolyl-(2<SP>1</SP>)]-1-naphthoic acid methyl ester from which the free acid is obtained by hydrolysis.
Patent GB-739358-A (GB)
Title: Improved arrangement for forming a fluid seal between two relatively rotatable members
IPC: F01D11/00
Filed: 1954-01-29
Abstract: 739,358. Stuffing-box substitutes. GENERAL MOTORS CORPORATION. Jan. 29, 1954 [Feb. 20, 1953], No. 2693/54. Class 122 (5). A seal between two relatively rotatable coaxial members comprises a resilient sealing member housed in a helical groove in one of the members and protruding therefrom into sealing contact with the other member, the sealing member being fixed at one end to the grooved member and the coaxial members being relatively rotatable in a direction such that friction at the sealing surfaces tends to twist the sealing member out of sealing contact. A helical coil spring 42, which may be of an alloy of magnesium, aluminium and steel, is freely housed in a helical groove 40 in an annular flange 28 attached to the casing 22 of an axial flow compressor and protrudes therefrom into resilient sealing contact with a surface 36 on an annular flange 34 attached to the compressor rotor 14. The spring 42 has a free internal diameter less than that of the surface 36 and is prevented from rotating in the groove 40 at one end by a hook portion 46 (Fig. 2) engaged in a slot 48 between adjacent turns of the groove so that when the rotor is rotating in its operative direction any increase in friction at the sealing surfaces tends to unwind the spring and reduce the sealing contact pressure. In a modification, the surface 36 surrounds the spring 42 which is housed in a helical groove in the outer periphery of the annular flange 28.
Patent GB-1070641-A (GB)
Title: Fertilizers
Inventor: PALMER ROBERT WILSON
IPC: C05F11/02
Filed: 1963-01-23
Abstract: A composition comprising peat and fertilizer salt in which the ratio of peat to salt is 20-60% is granulated in the presence of 30-55% of water and dried.  The salt may be ammonium sulphate, monoammonium phosphate, diammonium phosphate, potassium phosphate, monocalcium phosphate, single superphosphate, triple superphosphate, potassium chloride, potassium sulphate, or potassium nitrate.  The salt may be formed in situ, in which case the temperature should not be allowed to rise above 50 DEG  C.  The composition may also contain urea, urea-formaldehyde, bone meal, vermiculite, perlite, talc, or silica. The ingredients may be mixed and granulated in a paddle-type or planetry mixer or in a rotary drum.  Drying may be effected on a tray or conveyer belt dryer at a temperature of 60-70 DEG  C.
Patent GB-922201-A (GB)
Title: Direct current power supply circuit
IPC: G05F1/38
Filed: 1961-01-26
Abstract: 922,201. Automatic voltage control systems. NATIONAL CASH REGISTER CO. Jan. 26, 1961 [Feb. 25, 1960], No. 3040/61. Class 38 (4). The output voltage of a rectifier is stabilized by a saturable reactor controlled by a transistor comparator, in series with the rectifier. A saturable reactor 14 is connected between an A.C. source 10 and a half-wave rectifier 12. The smoothed rectified voltage is applied directly to one side 22 of an emitter coupled transistor comparator 21, 22, and through a Zener diode 23 to the other side 21. An increase in output voltage increases the collector current of transistor 21 and hence the current in a control winding 16 on the reactor. The flux due to the control winding 16 opposes that due to the main current in winding 14 hence an increase in control flux causes the reactor to saturate and pass current later in each half cycle of current supplied to the rectifier 12 and so restore the output voltage to a desired value. A portion of the voltage drop across a resistor 17 in series with the load energizes a control winding 15 in a sense to increase the output voltage with increasing load current. A bleed resistor 38 maintains a control current through the reactor 14 on light loads. It is stated that a three-phase supply may replace the single-phase supply.
Patent GB-1352824-A (GB)
Title: Vanadium alloys
IPC: G21C3/07
Filed: 1973-01-22
Abstract: 1352824 Vanadium base alloys EUROPEAN ATOMIC ENERGY COMMUMTY 22 Jan 1973 [21 Jan 1972] 3086/73 Heading C7A [Also in Division G6] An alloy, suitable for nuclear fuel element cans, comprises:- the balance, apart from impurities, such as up to 500 ppm oxygen and up to 80 ppm nitrogen, being vanadium. The alloy may be worked and then aged at 800‹C. or 1100‹C.
Patent GB-1254834-A (GB)
Title: Electric circuit arrangements for multiplying two values
IPC: G06G7/161
Filed: 1970-01-22
Abstract: 1,254,834. Multiplying apparatus; measuring power. LANDIS & GYR A.G. 22 Jan., 1970 [30 Jan., 1969], No. 3125/70. Headings G4G and G4H. [Also in Division G1] In a device for producing a pulse train whose frequency represents the product of two quantities, e.g. for measuring power in an electrical circuit, a current I 1 , Fig. 1, proportional to the first quantity is injected into an input junction 3 of a linear integrating amplifier 2, 4, and periodically a reference current I 01  is extracted from the junction, this current being extracted under the control of a trigger 9 for periods demarcated by the time of occurrence of the first pulse of a pulse train f 2 , having a frequency proportional to the second quantity, that occurs after the output of the integrating amplifier 2, 4 falls below a preset threshold level 7, until the first pulse of the train f 2  that occurs immediately after the output of the integrating amplifier 2, 4 next rises above the threshold level. With this arrangement it can be shown that the output frequency f a  is proportional to the product of I 1  and f 2  and hence proportional to the product of two currents I 1  and I 2  if the signal f 2  is produced by an arrangement 11 similar to the arrangement 1 include in the dotted box, in conjunction with a reference pulse generator 13 of frequency f 0 . The frequency of the resulting pulse train f a  may be determined digitally (Fig. 2, not shown) by counting its cycles for reference periods each being derived by frequency division of the output f 0  of the reference pulse generator. With this arrangement the final counts are independent of the reference frequency f 0  and hence variations in the reference frequency f 0  are of no consequence. In a modification (Fig. 3, not shown) in which input quantities of either sign can be multiplied; two similar feedback loops to the integrating amplifier 2, 4 are provided one functioning for positive input currents I 1  and one for negative input currents I 1 . An output signal having a frequency f a  proportional to the modulus of the product is produced as before, and a further lead is marked in accordance with the sign of the product.
Patent GB-103892-A (GB)
Title: Improved Condenser for Laboratory Purposes.
Inventor: CLARKE HAROLD PORRITT
IPC: B01D5/00
Filed: 1916-03-02
Abstract: 103,892. Clarke, H. P. March 2, 1916. Surface condensers.- A laboratory condenser comprises a tank A with inlet and outlet pipes a<1>, a<2> for cooling-liquid, and a series of glass or other condenser tubes D, D<1> removably or permanently secured in place bv short holes B and clips C, with or without a protecting-tube B<1>. The joints are made tight by rubber tubing d or stoppers d<1>. Each tube D is connected to a separate Soxhlet or other apparatus.
Patent GB-1472384-A (GB)
Title: Vacuum cleaners
IPC: A47L9/00
Filed: 1975-01-24
Abstract: 1472384 Vacuum cleaners G T WRIGHT and E G DOUBLEDAY 29 Dec 1975 [24 Jan 1975]  3287/75 Heading A4F A vacuum cleaner in which dirty fluid is drawn by a suction device through a filter via a resiliently extensible and contractable flexible hose 13 is provided with a chamber 7 having one end connected to a suction inlet and in which a connector 10 at one end of the hose is held captive, a connector 16 at the other end of the hose incorporating means such as spring projections 21 engaging in apertures for releasably retaining the connector 16 at the other end of the chamber 7, the connector 16  having a closure such as a flap 19 which can be opened to allow attachment of a tool 25 to the connector 16, whereby on release of the projections 21 and opening of the flap 19, the hose is extended from the chamber 7 by its own resilience, and on closure of the flap 19 the hose can be retracted for storage in the chamber by suction from the suction device, the hose being retained by the projections 21 in its retracted position. The flap 19 may be spring-biased and can be opened by pressure on a projecting finger 24 manually or automatically when a tool is fitted. The chamber 7 may be a straight tube as shown, or may be spiral or helical. It may be applied to a vacuum cleaner of the cylinder type, as shown, or of the upright type, Figs. 5 and 6 (not shown), or to a swimming pool cleaner. A bleed valve 23 may be provided to limit suction, and the cleaner may have a micro-switch (not shown) to automatically switch off the cleaner's motor on retraction of the hose.